Fixed 3.2V rail for noise-sensitive loads
The TLV70732DQNT is a 200 mA linear regulator with a fixed 3.2 V output, intended for low-noise power rails where the load current stays within that ceiling. The PSRR profile — 70 dB at 100 Hz rolling off to 50 dB at 1 MHz — means the output rejects ripple from upstream switching converters across the audio band and into the low-MHz range, which is useful for powering analog front-ends or sensor bias circuits that cannot tolerate switching noise. Dropout voltage is specified at 270 mV maximum at 150 mA load, so the input rail must stay at least 270 mV above 3.2 V under that load condition to maintain regulation. The 5.5 V absolute maximum input means the part can run from a 3.6 V Li-ion cell or a regulated 5 V bus without exceeding the rating.
Protection set and operating range
Protection features cover overcurrent, overtemperature, short-circuit, and reverse polarity — the reverse polarity clamp protects the regulator if the input voltage is accidentally reversed, which is a common failure mode in battery-powered field equipment. The enable pin (active high) allows the regulator to be shut down, reducing the quiescent current to near zero when the rail is not needed. The quiescent current is 50 µA typical — low enough for always-on rails in battery-operated sensors or IoT nodes where every microamp matters.
The 0.5 mm pitch is manageable with standard SMT assembly, but the small pad size means the stencil aperture should be adjusted to avoid solder bridging. Cut tape quantities are also available for prototyping or low-volume builds.
Lifecycle and compliance
For legacy designs or new builds requiring this exact output voltage and package, the part is available as a direct replacement for the TLV70732DQNT on the BOM.